title: Noncontact measurement of cardiac beat by using active stereo with waved-grid pattern projection.
abstract: We propose a method to observe cardiac beat from 3D shape information of body surface by using the active stereo with waved-grid pattern projection, and report preliminary experiments to evaluate validities of the proposed method. By comparing results of our method with those of electrocardiogram (ECG), we confirmed sufficient correspondences between peak intervals of depth changes between contiguous frames measured by the active stereo and R-R intervals measured by ECG. We proposed the visualization of the spatial distribution of depth change plotted on the 3D shape of chest surface. We confirm that the spatial phase difference, which is caused by heart pump ability, appears in the 3-D shape change of chest surface.
authors.forename: Hirooki
authors.initials: H
authors.lastname: Aoki
authors.forename: Ryo
authors.initials: R
authors.lastname: Furukawa
authors.forename: Masahito
authors.initials: M
authors.lastname: Aoyama
authors.forename: Shinsaku
authors.initials: S
authors.lastname: Hiura
authors.forename: Naoki
authors.initials: N
authors.lastname: Asada
authors.forename: Ryusuke
authors.initials: R
authors.lastname: Sagawa
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kawasaki
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Shiga
authors.forename: Atsushi
authors.initials: A
authors.lastname: Suzuki
mesh_terms: D004562:Electrocardiography; D006339:Heart Rate; D006801:Humans; D021621:Imaging, Three-Dimensional; D008991:Monitoring, Physiologic; D014741:Video Recording